193.55% is the change from 155 to 455
Calculation steps:
[( 455 - 155 ) ÷ 155] x 100 = 193.55%
Formula
Percentage change = [(455 - 155) / 155] x 100
Subtract the new number by the original number
455 - 155 = 300
300 ÷ 155 = 1.935483870967742
1.935483870967742 x 100 = 193.55%